Why Does My Go Application Fail to Connect to SQL Server with the Error \'login failed for user\'?

Go with SQL Server Driver Unable to Connect Successfully: Login Fails

Using Go with Microsoft SQL Server driver can present challenges. Here's an overview of the issue and its resolution steps:

Issue:

Upon executing db.ping() with the go-mssqldb driver, you encounter the error "login failed for user 'sakhaloo'". Simultaneously, using SQL Server Management Studio to open the database with the given username and password fails, resulting in the error "A connection was successfully established...but an error occurred during login."

Resolution Steps:

1. Ensure Proper Driver Installation: Download and extract the go-mssqldb driver package from its GitHub repository, ensuring that the files are placed in the specified directory (C:Gosrcgithub.comdenisenkomgo-mssqldb).
2. Check SQL Server User and Permissions: Verify that the user 'sakhaloo' exists as an SQL Server user with the appropriate permissions to the intended database. Ensure that the user is granted access to the database through roles or explicit permissions.
3. Enable TCP/IP Connection: Check if TCP/IP is enabled for SQL Server's protocols. Navigate to SQL Server Configuration Manager, locate Protocols for MSSQLSERVER, and ensure that TCP/IP is enabled. Restart the SQL Server service after making these changes.
4. Disable SSL Encryption: For SQL Server 2008 and 2008 R2, disable SSL encryption as it can interfere with logins. Install the Service Pack and cumulative updates mentioned in the github repository's documentation.
5. Review SQL Server Logs: Examine the SQL Server logs in the ERRORLOG file for any error messages that shed light on the login issue. Look for mentions of authentication failures or server configurations that prevent SQL Server authentication.
6. Grant permissions to the SQL Server user: Use SQL Server Management Studio to grant necessary permissions to the created SQL Server user for connecting to the database and performing required operations.

By following these steps, you can address the login issues encountered with the go-mssqldb driver and successfully connect to and access the SQL Server database.

The above is the detailed content of Why Does My Go Application Fail to Connect to SQL Server with the Error \'login failed for user\'?. For more information, please follow other related articles on the PHP Chinese website!